Note 12. Earnings Per Share (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended	9 Months Ended
Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2015	Mar. 31, 2014
Net income	$ 7,191us-gaap_NetIncomeLoss	$ 6,356us-gaap_NetIncomeLoss	$ 18,811us-gaap_NetIncomeLoss	$ 19,254us-gaap_NetIncomeLoss
Weighted Average Number of Shares Outstanding, Diluted	29,318	29,143	29,344	29,143
Weighted Average Number of Shares Outstanding, Basic	29,172	29,143	29,159	29,143
Dilutive effect of average outstanding performance shares	146	0	185	0
Earnings Per Share, Diluted	$ 0.25us-gaap_EarningsPerShareDiluted	$ 0.22us-gaap_EarningsPerShareDiluted	$ 0.64us-gaap_EarningsPerShareDiluted	$ 0.66us-gaap_EarningsPerShareDiluted
Earnings Per Share, Basic	$ 0.25us-gaap_EarningsPerShareBasic	$ 0.22us-gaap_EarningsPerShareBasic	$ 0.65us-gaap_EarningsPerShareBasic	$ 0.66us-gaap_EarningsPerShareBasic

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method.

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